1·Criminals are very reluctant to leave a paper trail.
罪犯们非常不愿意留下案底。
—— 《柯林斯英汉双解大词典》
2·Comets leave a trail of debris behind them that can lead to meteor showers on Earth.
彗星会在经过的地方留下一些碎片，这些碎片可以引起地球上的流星雨现象。
3·Just like ants that leave a chemical trail each time they bring food back to the nest, we leave real-time feedback each time we visit a page or select (or ignore) a result.
正如蚂每次蚁搬运食物时都会留下化学信号，当外膜浏览某个网页或选择（忽略）某条搜索结果时，也留下了一种实时的反馈信息。
4·The Web companies are, in effect, taking the trail of crumbs people leave behind as they move around the Internet, and then analyzing them to anticipate people’s next steps.
事实上，网站公司通过追踪人们在浏览网页时遗留的信息，加以分析，接着推断人们的下步行为。
5·"People who use Craigslist leave more of a trail than people who just use the phone," says Rasch.
“使用Craigslist的人要比只使用手机的人留下更多的线索，”拉希说。
6·Sometimes the only clue you have to SRED is the trail of bread crumbs you leave behind.
有时，你留下的面包屑痕迹是暗示你患有与睡眠有关饮食失调症的唯一线索。
7·The idea is that we leave this trail of bacteria behind us, and that trail may be informative.
我们的想法是我们将这种细菌追踪法留下来，这些方法有一天可能能够提供有用的信息。
8·You leave a paper trail.
你留下纸张线索。
9·If you sign up, log in and start using any kind of online service, the cyber-trail you accidentally leave on the world as you click and type away, seems to be a matter of course.
如果你注册、登录并开始使用任何一种在线服务，当你点击、输入时会在这个世界上无意中留下数码足迹，这已经见怪不怪了。
10·As we can see, the trail is overlapping the white volume, so we need a mask to hide part of it. Leave only the top-left section visible.
就像我们看见的，白色得条带与音量图重叠了，所以我们需要用蒙版将其部分隐藏，只留下左上端可见。